Cable TV wired CATV ( Community Access Television) is a TV set method based on fixed transmission equipment system by cable line. At the same time, CATV providers received signal from mayny TV companies in the world through satellite networks, then amplifying signals obtained and distributed to customers via fiber Cable or coaxial cable the advantages of using Cable TV. Initial investment costs and monthly subcription costs are lower other types of TV services paid.
-CATV has features of two-way communication and making direct exchanges between the performance side and the collection side. Therefore Subscribers have chance of enjoying many world local and national TV programs. Program’s contents which defined and censored by the state, are spiritural foods for each social individual object with each preferred subject in the cultural life, such as : news, science and education department training children, sport ,arts, music, movies, and information.
-CATV is not essental to have multi-channel iamge generator occupying no space frequency, and causing no disturbance radui waves. The subcribers don’t need to put collecting antenna on roof- top. CATV doesn’t cause the damages because of thunder and thunderbolt ,rainstorm and ensure order as well as beauty of the city called “ Green – clean – Beautiful”. Many countries in the world use CATV(Cable TV) to scheme modern urban CATV has high and stable quality during year, and reaches ISO 9001 standard in all conditions of geography, climate in Viet Nam.
- CATV is relevant to developing IT tendency in modern age, and use content – management sgtware, fees, and cable – network security. CATV technology combines between analog similar TV and diagital TV, between TV and bradcasting , between TV and telephone and fax, and connect to computer and internet to create multimedia sustem in households.
